:root{
  --ink:#000; --ink-2:#000; --muted:#222; --line:#dde3ec; --bg:#f5f7fb; --card:#fff;
  --brand:#0b5d7a; --brand-2:#0e7c9b; --accent:#e8f4f8;
  --c1:#1f7a4d; --c2:#2d7fb8; --c3:#b7791f; --c4:#c2410c; --c5:#b42318;
  --warn-bg:#fff7e6; --warn-line:#f0c36d; --err-bg:#fdecec; --err-line:#e7a1a1; --ok-bg:#eaf7ef; --ok-line:#9fd3b3;
  --radius:12px; --shadow:0 1px 2px rgba(20,33,61,.06),0 4px 16px rgba(20,33,61,.06);
  font-size:16px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--brand)}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-inner{display:flex;align-items:center;justify-content:space-between;height:58px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand small{display:block;color:var(--muted);font-size:.72rem;line-height:1}
.logo{width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}
.top-nav{display:flex;gap:16px;font-size:.92rem}
.top-nav a{text-decoration:none;color:var(--ink-2)}
.top-nav a:hover{color:var(--brand)}
.hero{padding:34px 0 14px;text-align:center}
.hero h1{margin:0 0 6px;font-size:clamp(1.35rem,3.4vw,2rem);letter-spacing:.02em;color:#000}
.lead{margin:0 0 18px;color:var(--ink-2)}
.search{display:flex;gap:8px;max-width:760px;margin:0 auto}
.search input{flex:1;font-size:1.08rem;padding:15px 16px;border:2px solid var(--line);border-radius:var(--radius);background:#fff;min-width:0}
.search input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(14,124,155,.12)}
.search button,.btn{font:inherit;border:0;border-radius:10px;background:var(--brand);color:#fff;padding:0 20px;font-weight:600;cursor:pointer}
.search button:hover,.btn:hover{background:var(--brand-2)}
.btn{padding:9px 14px;font-size:.92rem}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--accent)}
.hint{color:var(--muted);font-size:.88rem;margin:10px 0}
.disclaimer{max-width:760px;margin:12px auto 0;font-size:.82rem;color:var(--ink-2);background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:10px;padding:9px 12px;text-align:left}
.loading{text-align:center;color:var(--muted);padding:20px}
section[hidden]{display:none}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin:16px 0}
.card h2{margin:0 0 10px;font-size:1.12rem}
.card h3{margin:16px 0 8px;font-size:1rem}
.zone-label{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--brand);background:var(--accent);border-radius:6px;padding:2px 8px;margin-bottom:8px}
.muted{color:var(--muted)}
.small{font-size:.86rem}
.res-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap}
.list{list-style:none;margin:0;padding:0}
.list li{border-top:1px solid var(--line)}
.list li:first-child{border-top:0}
.list button.row{all:unset;box-sizing:border-box;display:grid;grid-template-columns:96px 1fr auto;gap:12px;align-items:start;width:100%;padding:10px 6px;cursor:pointer;border-radius:8px}
.list button.row:hover,.list button.row:focus-visible{background:var(--accent)}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:700;color:var(--brand)}
.en{color:var(--muted);font-size:.86rem}
.path{color:var(--muted);font-size:.78rem}
.tag{display:inline-block;font-size:.72rem;border-radius:999px;padding:2px 8px;border:1px solid var(--line);color:var(--ink-2);background:#fff;white-space:nowrap}
.tag.link{border-color:var(--ok-line);background:var(--ok-bg);color:var(--c1)}
.tag.nolink{color:var(--muted)}
.tag.warn{border-color:var(--warn-line);background:var(--warn-bg);color:#8a5a00}
.tag.err{border-color:var(--err-line);background:var(--err-bg);color:var(--c5)}
.notice{border-radius:10px;padding:10px 12px;margin:10px 0;font-size:.92rem}
.notice.warn{background:var(--warn-bg);border:1px solid var(--warn-line)}
.notice.err{background:var(--err-bg);border:1px solid var(--err-line)}
.notice.ok{background:var(--ok-bg);border:1px solid var(--ok-line)}
.notice.info{background:var(--accent);border:1px solid #b9dbe6}
.kv{display:grid;grid-template-columns:150px 1fr;gap:6px 14px;margin:0}
.kv dt{color:var(--muted);font-size:.88rem}
.kv dd{margin:0}
.crit-pick{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.crit-pick button{font:inherit;font-size:.9rem;border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;cursor:pointer}
.crit-pick button[aria-pressed=true]{background:var(--brand);color:#fff;border-color:var(--brand)}
table.src{width:100%;border-collapse:collapse;font-size:.9rem}
table.src th,table.src td{border:1px solid var(--line);padding:6px 8px;vertical-align:top}
table.src th{background:#eef3f8;font-weight:600;font-size:.8rem}
table.src td.x{text-align:center;width:42px;font-weight:700;color:var(--ink)}
table.src td.t{white-space:pre-wrap}
table.src tr.lv2 td.t{padding-left:24px}
table.src tr.lv3 td.t{padding-left:42px}
table.src tr.heading td.t{font-weight:600}
table.src tr.sel{background:#fffbe8}
.scroll{overflow-x:auto}
.opts{display:flex;flex-direction:column;gap:6px}
.opt{display:grid;grid-template-columns:22px 1fr auto;gap:8px;align-items:start;border:1px solid var(--line);border-radius:10px;padding:8px 10px;cursor:pointer;background:#fff}
.opt:hover{border-color:var(--brand-2)}
.opt input{margin-top:4px}
.opt .ctx{display:block;color:var(--muted);font-size:.8rem}
.opt .txt{white-space:pre-wrap}
.opt.blocked{background:#fafbfc}
fieldset{border:1px solid var(--line);border-radius:10px;padding:12px;margin:10px 0}
legend{font-weight:600;padding:0 6px}
.field{display:flex;flex-direction:column;gap:3px;margin:6px 0}
.field label{font-size:.86rem;font-weight:600}
.field small{color:var(--muted);font-size:.78rem}
.field input,.field textarea{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;width:100%}
.field input:focus{outline:none;border-color:var(--brand-2)}
.bp-table{width:100%;border-collapse:collapse}
.bp-table th,.bp-table td{padding:5px 4px;text-align:left;font-size:.86rem;vertical-align:top}
.bp-table input{font:inherit;padding:7px 8px;border:1px solid var(--line);border-radius:8px;width:100%;min-width:64px}
.row-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.result{border-radius:var(--radius);padding:16px;border:2px solid var(--line);background:#fff}
.result .big{font-size:1.6rem;font-weight:800}
.result.c-I{border-color:var(--c1)} .result.c-I .big{color:var(--c1)}
.result.c-II{border-color:var(--c2)} .result.c-II .big{color:var(--c2)}
.result.c-III{border-color:var(--c3)} .result.c-III .big{color:var(--c3)}
.result.c-IV{border-color:var(--c4)} .result.c-IV .big{color:var(--c4)}
.result.c-V{border-color:var(--c5)} .result.c-V .big{color:var(--c5)}
.result.none{border-color:var(--warn-line);background:var(--warn-bg)}
.result ul{margin:6px 0 0;padding-left:20px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.browse-group h3{margin:18px 0 6px;color:#000;font-size:.95rem;letter-spacing:.03em}
.foot{color:#000;font-size:.8rem;padding:24px 0 40px;border-top:1px solid var(--line);margin-top:30px;background:#fff}
@media (max-width:720px){
  .top-nav{gap:10px;font-size:.82rem}
  .brand small{display:none}
  .list button.row{grid-template-columns:72px 1fr}
  .list button.row .tag{grid-column:2}
  .kv{grid-template-columns:1fr}
  .kv dt{margin-top:6px}
  .grid2{grid-template-columns:1fr}
  .search{flex-direction:column}
  .search button{padding:12px}
  table.src td.x{width:30px;padding:6px 2px}
}
@media print{
  .top,.hero,.foot,#results,.row-actions,.no-print,.opts .opt:not(.checked){display:none!important}
  body{background:#fff}
  .card{box-shadow:none;border:1px solid #999;break-inside:avoid}
  .print-only{display:block!important}
}
.print-only{display:none}
select{max-width:100%;font:inherit;padding:6px;border:1px solid var(--line);border-radius:8px}
.mstat{display:none}
@media (max-width:720px){
  table.src th.st,table.src td.st{display:none}
  .mstat{display:block;margin-top:4px}
  table.src{font-size:.84rem}
  .bp-table th:nth-child(n+4),.bp-table td:nth-child(n+4){display:none}
  .opt{grid-template-columns:22px 1fr}
  .opt>.tag{grid-column:2;justify-self:start}
}

/* Tra cứu nhanh: gợi ý & kết quả gọn */
.qwrap{position:relative;flex:1;min-width:0;display:flex}
.qwrap input{flex:1}
.sugg{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:20;list-style:none;margin:0;padding:0 4px 4px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.12);max-height:min(62vh,480px);overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;text-align:left;contain:content}
.sugg li{display:grid;grid-template-columns:64px minmax(0,1fr) 128px;gap:10px;align-items:center;min-height:40px;padding:6px 10px;border-radius:8px;cursor:pointer;color:#000;line-height:1.35}
.sugg .sg-name{overflow-wrap:anywhere}
.sugg .sg-cls{text-align:right}
.sugg li.sg-head{position:sticky;top:0;z-index:1;background:#eef3f8;border-radius:0;margin:0 -4px;padding:7px 14px;cursor:default;font-weight:700;min-height:36px;box-shadow:0 1px 0 var(--line)}
.sugg li.sg-item{padding-left:18px}
.sugg li.sg-single{padding-left:14px;border-top:1px solid var(--line);border-radius:0;margin:0 -4px;font-weight:600}
.sugg li.sg-item.on,.sugg li.sg-item:hover{background:var(--accent)}
.sugg li.none{display:block;color:var(--muted);cursor:default}
.sugg .sg-cls{font-size:.78rem;font-weight:600;white-space:nowrap}
.quick-card .q-head{display:flex;gap:14px;align-items:center;margin-bottom:6px}
.q-code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:800;font-size:1.5rem;color:#000;background:var(--accent);border-radius:10px;padding:6px 12px;white-space:nowrap}
.q-name{font-weight:700;font-size:1.1rem}
.q-crit{margin:16px 0 6px;font-size:1rem}
table.qtab{width:100%;border-collapse:collapse;font-size:.95rem}
table.qtab th,table.qtab td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:left;vertical-align:top}
table.qtab th{font-size:.8rem;background:#eef3f8}
table.qtab td.qc{width:150px;white-space:nowrap}
.cls{display:inline-block;white-space:nowrap;font-weight:800;border-radius:6px;padding:1px 8px;border:2px solid var(--line)}
.cls.cI{border-color:var(--c1);color:var(--c1)} .cls.cII{border-color:var(--c2);color:var(--c2)} .cls.cIII{border-color:var(--c3);color:var(--c3)} .cls.cIV{border-color:var(--c4);color:var(--c4)} .cls.cV{border-color:var(--c5);color:var(--c5)}
.q-note{margin:12px 0 0}
@media (max-width:720px){
  .sugg li{grid-template-columns:58px minmax(0,1fr);gap:8px}
  .sugg .sg-cls{grid-column:2;text-align:left}
  .sugg .sg-cls:empty{display:none}
  table.qtab td.qc{width:auto;white-space:normal}
}
.qtab tr.q-sec td{background:#f7f9fc;font-weight:700;padding-top:9px}
.qtab td.t{white-space:pre-wrap}
.qtab tr.lv2 td.t{padding-left:20px} .qtab tr.lv3 td.t{padding-left:34px}
.src-quote{margin:6px 0 12px;padding:8px 14px;border-left:4px solid var(--brand);background:#f7f9fc;border-radius:6px}
.src-quote p{margin:4px 0}
.cls-row{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;margin:0 0 12px}
.cls-name{margin-right:6px}
.sugg .sg-cls.doc{color:#8a5a00}
.notice.doctor b{color:#8a5a00}
.foot .visits{font-size:.9rem;margin:0 0 6px}
.foot .visits[hidden]{display:none}
.src-quote p{white-space:pre-line}
.annex{margin-top:4px}
.annex div{margin:2px 0}
.res-group{margin:16px 0 4px;font-size:.98rem;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.res-group .sg-cls{font-size:.78rem;font-weight:600}